Shodhganga University: signed MoU on 21st December 2015.http://hdl.handle.net/10603/89412
signed MoU on 21st December 2015.Sun, 15 Sep 2019 07:22:45 GMT2019-09-15T07:22:45ZShodhganga University: signed MoU on 21st December 2015.https://sg.inflibnet.ac.in:443/jspui/retrieve/1519139/veer surendrahttp://hdl.handle.net/10603/89412
Strong and Absolute Indexed Summabilities with Applications to Fourier Serieshttp://hdl.handle.net/10603/252642
Title: Strong and Absolute Indexed Summabilities with Applications to Fourier Series
Abstract: Over the years, the strong and absolute indexed summabilities with applications to Fourier series have gained a considerable importance and several works have been ap- peared in the literature using various kind of summability methods (ordinary and statis- tical), namely Ces`aro summability, Reisz summability, N¨orlund summability, Harmonic summability etc. In the present thesis, more developments have been made by authors in the same direction with introduction of several new results by using strong and ab- solute index summabilities, Tauberian theorems, deferred Ces`aro summability, deferred N¨orlund summability and deferred Reisz summability.
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newlinehttp://hdl.handle.net/10603/252642Strong and Absolute Indexed Summabilities with Applications to Fourier Serieshttp://hdl.handle.net/10603/252641
Title: Strong and Absolute Indexed Summabilities with Applications to Fourier Series
Abstract: Over the years, the strong and absolute indexed summabilities with applications to Fourier series have gained a considerable importance and several works have been ap- peared in the literature using various kind of summability methods (ordinary and statis- tical), namely Ces`aro summability, Reisz summability, N¨orlund summability, Harmonic summability etc. In the present thesis, more developments have been made by authors in the same direction with introduction of several new results by using strong and ab- solute index summabilities, Tauberian theorems, deferred Ces`aro summability, deferred N¨orlund summability and deferred Reisz summability.
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newlinehttp://hdl.handle.net/10603/252641Texture Classification by Combining Laws Mask with Traditional Texture Analysis Techniqueshttp://hdl.handle.net/10603/247796
Title: Texture Classification by Combining Laws Mask with Traditional Texture Analysis Techniques
Abstract: Texture is one of the primary visual attributes used to describe patterns found in nature. Texture analysis have been received a considerable amount of attention over the last few decades as it creates the basis of most pattern recognition methods. Many approaches have been proposed in signal processing methods. Laws texture energy measure is one of the important approaches to describe the texture, and known as Laws mask method. However, the original Laws mask method is not capable of capturing texture information at multiple scales. The original Laws mask has also not been utilized to verify the robustness to illumination variations. With this entire gap in mind, the central hypothesis of this thesis is to integrate the original Laws mask approach with various existing texture analysis techniques for a richer texture description in terms of classification rates.To do so, we used Steerable pyramid, Discrete Wavelet Transform, Dual Tree Complex Wavelet Transform, Bilateral filter, and Homomorphic filter, techniques that led to methodologies with efficiency comparable to the original Laws mask technique.
newlineSteerable pyramid is a linear decomposition through which an image is subdivided into a collection of subbands of various orientations. Our first method combines steerable pyramid with Laws mask. Steerable pyramid with three different approaches are integrated with Laws mask. The wavelet transform extracts directional details that capture horizontal, vertical and diagonal details of an image. In a second approach, discrete wavelet transform is combined with Laws mask. Different basis functions with three decomposition levels are used in discrete wavelet transform.http://hdl.handle.net/10603/247796Improvement of Power System Stability Using Coordinated Design of Facts Devices and Excitation Controllershttp://hdl.handle.net/10603/247380
Title: Improvement of Power System Stability Using Coordinated Design of Facts Devices and Excitation Controllers
Abstract: This thesis is concerned with the optimal design of coordinated series Flexible AC Transmission Systems (FACTS) devices with Power System Stabilizer (PSS) in excitation system of power systems for damping out the Low Frequency Oscillations (LFO) and hence improving the system stability during disturbance and steady change of operating conditions during gradual change in load demands. The existence of LFO does not allow the steady state power flow in transmission line and persistence of LFO for long duration may create instability and even cascading outage if sufficient damping action is not taken immediately. Thyristor Control Series Capacitor (TCSC) and Static Synchronous Series Compensator (SSSC) are two series FACTS devices employed in this thesis work for auxiliary power oscillation damping (POD) controller. The work is focused on the improvement of the rotor angle stability that includes small signal stability and transient stability of power systems. Since, the stability depends on the design of FACTS devices and PSS controller, the conventional lead-lag structure of PSS has been modified to classical controller such as PD, PID and fractional PID type PSS for improving the behavior of system characteristics. The linear control theory is used in linearized Heffron-Philips model of power systems to find the closed loop dominant eigen values from which the damping ratio and natural frequency of oscillations are investigated to ensure the effectiveness of the controller. The stability improvement of nonlinear power system has been investigated with Multi-Input and Single Output (MISO) control structure than that of Single Input and Single Output (SISO) structure. Both local and remote control signals are investigated and employed in the proposed controller. It is found that, the remote signal in the analysis of system stability is more effective due to its controllability and observability properties. The work has also been done to construct the remote signal from the availability local signal and applied in cohttp://hdl.handle.net/10603/247380